Sheet winding and turning apparatus

ABSTRACT

Sheet winding and turning apparatus for printed cardboard and the like wherein a stack of horizontal sheets comprising the stack are rotated about a longitudinal axis, while being confinedly supported, through an angle greater than 90*, and with the boards being projected against a curved surface defined by a plurality of aligned spaced tubes of different sizes, so arranged as to constitute in effect a bowed plate, the tubes being replaceable and interchangeable with different sizes of tubes for altering the curvilinear configuration, to implement breaking any ink pack existing and to bow the sheets to provide enhanced column strength to prevent a tendency of the board slipping to the bottom of the pile as retaining jaws of the turner are opened, with resultant bottom edge pressure preventing winding or aeration when the sheets are rotated back to a 90* orientation, and preferably tilted by the apparatus to dispose the bottom and side edges at an angle from the horizontal and vertical planes with the bottom edges of the sheets being winded and jogged to align sheet edges.

nited States Patent 1 Atwood et a1.

[ 4] SHEET WINDING AND TURNING APPARATUS [75] Inventors: Lamar TQAtwood, Cumberland Center; Joseph'E. Radomski, Saco;

David E. Wilson, Cumberland Center, all of Maine [73] Assignee: Southworth Machine Company,

Portland, Maine [22] Filed: Dec. 22, 1972 [21] Appl. No.: 317,866

[52] US. Cl 34/150, 34/163, 34/38 [51] Int. Cl. F261) 13/00 [58] Field of Search 214/65; 29/200 A; 271/89;

Primary ExaminerCarroll B. Dority, Jr. Assistant Examiner-Larry 1. Schwartz 5 7 ABSTRACT Sheet winding and turning apparatus for printed cardboard and the like wherein a stack of horizontal sheets comprising the stack are rotated about a longitudinal axis, while being confinedly supported, through an angle greater than 90, and with the boards being projected against a-curved surface defined by a plurality of aligned spaced tubes of different sizes, so arranged as to constitute in effect a bowed plate, the tubes being replaceable and interchangeable with different sizes of tubes for altering the curvilinear configuration, to implement breaking any ink pack existing and to bow the sheets to provide enhanced column strength to prevent a tendency of the board slipping to the bottom of the pile as retaining jaws of the turner are opened, with resultant bottom edge pressure preventing winding or aeration when the sheets are rotated back to a 90 orientation, and preferably tilted by the apparatus to dispose the bottom and side edges at an angle from the horizontal and vertical planes with the bottom edges of the sheets being winded and jogged to align sheet edges.

8 Claims, 8 Drawing Figures Patented F eb. 12, 1974 2 Sheets-Sheet 1 Patented Feb. 12, 1974 2 Sheets-Sheet 2 SHEET WINDING AND TURNING APPARATUS BACKGROUND OF THE INVENTION Heretofore, winding and jogging devices for paper board sheet and the like have included apparatus for rotating a stack of horizontal sheets to a vertical positionment with a subsequent winding or aeration of the sheets while the sheets are on edges thereof. Additionally, it is known to rotate the stack of horizontal sheets, while confinedly supported, through an angle greater than 90 and projecting the boards or sheets against a curved surface to implement breaking any ink pack which may be in a load and to provide enhanced necessary column strength to the sheets, especially larger sheets. Such apparatus and method are disclosed in US. Pat. No. 3,680,220assigned'to a common assignee herewith.

It is additionally known to further tilt the sheets when returned to the vertical plane in a third dimension with subsequent winding or blowing and jogging action in conjunction with gravity to align the sheet edges into desired squareness. Such apparatus is shown in copending application, Ser; No. 204,252, now US. Pat. No. 3,704,089, entitled SHEET WINDING, TURNING AND ALIGNING METHOD AND APPARATUS, filed Dec. 2, 1971, and assigned to a common assignee herewith.

SUMMARY or THE INVENTION tilting and winding and jogging wherein the curved surface is-defined by a plurality of aligned spaced tubes of different sizes which are so arranged as to constitute in effect a bowed plate with the tubes being replaceable and interchangeable with different sizes of tubes so that the curvilinear configuration of the surface can be altered or varied for optimum results when working with different sheet sizes, conditions, etc.

Additional objects and advantages of the present invention will be more readily apparent from the following detailed description of an embodiment thereof when taken together with the accompanying drawings in which: j

FIG. I is a perspective view of the apparatus rotated to a sheet bowing position;

FIG. 2 is a perspective view of the apparatus moving to winding position;

FIG. 3 is an end elevational view of the structure, including the tubes defining thebowing surface;

FIG. 4 is a view similar to FIG. 3, of a section through a specifically different construction of a machine emand pivotally mounts at M a frame generally designated.

12, which includes a base 14, a back I6, a side 18, and

-a top generally designated 20. Base 14' is movably mounted on back l6 and adapted for reciprocating movement toward or away from top 20 through mechanism generally indicated at 22. Details of this above described mechanism are shown and described in the aforementioned copending application, Ser. No. 204,252, to which reference is herein made and the details being incorporated. herein by reference thereto. Winding and jogging control means are generally indicated at 23.

The present invention is concerned primarily with the construction of top 20, which includes a base or platform member 24, having strengthening ribs 26 and to which are removably mounted a plurality of tubes 28, 30, 32, 34 and 36, the outermost surfaces of which coact to, in effect, form a curvilinear or bowing surface 38 indicated by a broken line in FIG. 3.

As will be pointed out in greater detail hereinafter, these tubes 28-36 are removably mounted and can be interchanged or replaced with other tubes of different sizes so that, in effect, the curved shape shown at 38 can be varied to, for example, increase the curve or to give a wave form or to emphasize the height of a portion of the so created curved surface. Under different operating conditions and circumstances it might be desirable to so alter the curve shape.

The frame 12 constitutes, in effect, an open ended and sided cage and in operation, a stack of sheets which are horizontally stacked are placed on base 14 either directly or preferably on a pallet. The base 14 is then moved upwardly to place the top in contacting positionment with the uppermost of the sheets in the stack. The frame is then rotated about a longitudinal axis, not shown, through an angle greater than up to and including to impinge or project the stacked sheets against the spaced tubes which define the curved or bowing surface 38. This serves to break any ink pack existing and, additionally and of great significance, bows the sheets as shown in FIGS. 1 and 2 to provide enhanced column strength to prevent a tendency of the board slipping to the bottom of the pile when the frame 12 is reversely'rotated so as to place the sheets at substantially 90 to the horizontal and resting on their edges on back 18. When so' reversely rotated, the cage is then tilted by the apparatus to a position shown in FIG. 2 to dispose the bottom and side edges at an angle from the horizontal and vertical planes, whereupon the bottom edges of the sheets are winded and jogged to align thesheet edges by a combination of gravity and jogging and winding forces. Reference is again herein made to copending application, Ser. No. 204,252, for details in this regard.

The mounting of the tubes is more clearly shown in FIGS. 3-8 inclusive. As shown, the tubes are mounted to channels 40 by welding or the like, with the channel configuration as shown in FIG. 6 having a stud 42 affixed to the under side and projecting therefrom. Spaced ears or lugs 44 are attached to flat bars 46, which in turn are secured as by welding to base or platform 24. The cars 44 have mating holes 48 there through, and stud 42 having an opening or bore 50 through which pins are inserted as shown at 52, and which can be of any desired type, preferably of a spring engaging or clamping type a spring washer or ring being shown at 53. The studs 42 pass through holes 54 as shown in FIG. 6 in-dotted lines for mounting of the tubes.

Various of the tubes, as shown in FIG. 4, showing a specifically different arrangement can be mounted at the position of strengthening and support channels or l-beams 56 or the like through which T-shaped holes 58 are provided which also extend through platform 24 and through which studs 42A extend, again for securement by pins 52A in the nature of spring pins by coaction of spring washer or ring 53A. The various portions of the pins and studs can pass through slot 58 and then can be turned for locking.

Manifestly, different specific mounting means can be provided which permit removal of and interchanging of the tubes with respect to size and positionment to effect different effective surfaces against which the sheets are projected or impinged.

Minor changes in'details of construction otherwise can be effected in the shown and described embodiments without departing from the spirit and the scope thereof as defined in and limited solely by the appended claims.

We claim:

1. Sheet winding and turning apparatus comprising:

A. a rotatably mounted turntable including:

i. a movable base platform to initially support a vertical stack of horizontal sheets; ii. a top member extending across the top of said turntable; iii. a back; and iv. a side; B. said top member including a plurality of tubes mounted and positioned to conjointly form a curvilinear sheet engaging and bowing evolved surface;

C. means removably mounting said tubes to permit rearrangement thereof and replacement by differ ent tubes to change the shape of the sheet engaging and bowing evolved surfaces;

D. means to rotate said turntable, and a stack of sheets on said base platform, in a vertical plane initially through an angle greater than to impinge uppermost sheets in said stack against said tube evolved curvilinear sheet engaging and bowing surface to contour and position the sheets for enhanced column strength, and to subsequently reverse rotate the same to dispose said sheets vertically on a side edge thereof for subsequent aerating and aligning.

2. Sheet winding and turning apparatus as claimed in claim 1, said tubes having respectively different diameters to define said sheet engaging and bowing evolved surface.

3. Sheet winding and turning apparatus as claimed in claim 1, said top member including a plate, studs operatively attached to and extending from said tubes, said studs being removably attachable to said plate for mounting said tubes.

4. Sheet winding and turning apparatus as claimed in claim 3 including open channels attached to and mounting said tubes, said studs being attached to said channels.

5. Winding and turning apparatus as claimed in claim 4, said plate having openings therethrough and said studs extending through said openings and securing means engageable with the extended ends of said studs for removable attachment to said plate.

6. Winding and turning apparatus as claimed in claim 5, the extended ends of said studs having holes therethrough, and pins removably inserted through said holes for securement of said studs.

7. Sheet winding and turning apparatus as claimed in claim 6 including spaced bored ears secured to the under side of said plate, said pins extending through said stud holes and the bores in said ears for securement therein.

8. Sheet windingand turning apparatus as claimed in claim 6 wherein said pins are spring clamped. 

1. Sheet winding and turning apparatus comprising: A. a rotatably mounted turntable including: i. a movable base platform to initially support a vertical stack of horizontal sheets; ii. a top member extending across the top of said turntable; iii. a back; and iv. a side; B. said top member including a plurality of tubes mounted and positioned to conjointly form a curvilinear sheet engaging and bowing evolved surface; C. means removably mounting said tubes to permit rearrangement thereof and replacement by different tubes to change the shape of the sheet engaging and bowing evolved surfaces; D. means to rotate said turntable, and a stack of sheets on said base platform, in a vertical plane initially through an angle greater than 90* to impinge uppermost sheets in said stack against said tube evolved curvilinear sheet engaging and bowing surface to contour and position the sheets for enhanced column strength, and to subsequently reverse rotate the same to dispose said sheets vertically on a side edge thereof for subsequent aerating and aligning.
 2. Sheet winding and turning apparatus as claimed in claim 1, said tubes having respectively different diameters to define said sheet engaging and bowing evolved surface.
 3. Sheet winding and turning apparatus as claimed in claim 1, said top member including a plate, studs operatively attached to and extending from said tubes, said studs being removably attachable to said plate for mounting said tubes.
 4. Sheet winding and turning apparatus as claimed in claim 3 including open channels attached to and mounting said tubes, said studs being attached to said channels.
 5. Winding and turning apparatus as claimed in claim 4, said plate having openings therethrough and said studs extending through said openings and securing means engageable with the extended ends of said studs for removable attachment to said plate.
 6. Winding and turning apparatus as claimed in claim 5, the extended ends of said studs having holes therethrough, and pins removably inserted through said holes for securement of said studs.
 7. Sheet winding and turning apparatus as claimed in claim 6 including spaced bored ears secured to the under side of said plate, said pins extending through said stud holes and the bores in said ears for securement therein.
 8. Sheet winding and turning apparatus as claimed in claim 6 wherein said pins are spring clamped. 